Valve comprising elastic sealing elements

ABSTRACT

The invention relates to a valve ( 10, 110 ) having a valve chamber ( 14, 114 ), having at least one inlet conduit ( 16, 116 ) and one outlet conduit ( 18, 118 ), furthermore having a movable lifting rod ( 34, 134 ), one end of which opens into an actuator ( 53 ), and having at least one valve member ( 36, 136, 236 ) secured to the lifting rod ( 34, 134 ), and having at least one valve seat ( 22, 122 ) cooperating with the valve member ( 36, 136, 236 ). 
     It is proposed that the valve seat ( 22, 122 ) and/or valve member ( 36, 136, 236 ) is elastically deformable in such a way that the elasticity of the valve seat ( 22, 122 ) and/or valve member ( 36, 136, 236 ) is at least so great that the valve member ( 36, 136, 236 ) can be thrust through the valve seat ( 22, 122 ) by an in particular external exertion of force and that the valve seat ( 36, 136, 236 ) and the valve member ( 22, 122 ) return to their outset state.

PRIOR ART

The invention is based on a valve as generically defined by the preambleto the independent claim.

Such valves are known, for instance from German Patent Disclosure DE 19753 575 A1. The valve described in DE 197 53 575 A1 is a magnetic bypassvalve for a liquid-regulated heating or cooling system. Two valvemembers secured to a lifting rod of the valve regulate the flow betweenan inlet conduit and two outlet conduits, and one of these outletconduits takes on the function of a bypass conduit in the heating andcooling cycle. A disadvantage of the valve described in DE 197 53 575 A1and of all comparable valves is—for reasons of construction—the quitecomplex assembly of the individual components of the valve. First thesealing rings, which form the valve seats of the valve chamber, and aspacer sleeve that defines the actual valve chamber of the valve have tobe thrust onto the lifting rod of the valve. After that, a first valvemember, the bypass valve member, can be mounted on the lifting rod andsecured to the lifting rod with a securing shim. This preassembled unitcomprising the lifting rod, bypass valve member, valve seats and spacerelement is thrust into the valve housing, and the individual componentsare placed in their position. After that, a further spacer sleeve foraffixing the valve chamber must be introduced into the valve housing,and only after that can the second valve member, for monitoring theuseful outlet, be secured to the lifting rod.

This described assembly is inconvenient, complicated and thus expensive.Furthermore, the fastening of the valve members to the lifting rod mustbe secured in a complicated way by means of a groove in the lifting rodand one additional securing shim.

ADVANTAGES OF THE INVENTION

The valve according to the invention having the characteristics of themain claim has the advantage of enabling faster, better assembly in themanufacture of valves. The sequence of assembly becomes virtuallyindependent of the instant of installation of the lifting rod in thevalve housing, since the lifting rod, with the valve members fixedlymounted on it, can even be introduced later on into the valve chamber.An elastic stretchability of the sealing elements, that is, of the valveseat and/or valve member, assures that the valve member can be ledthrough the applicable valve seat by some exertion of force fromoutside, and when the valve is in operation the sealing elements have bythen resumed their original shape, so that the valve chamber is securelysealed off in the desired way. The requisite force expenditure forpressing the valve member through a valve seat can be exerted fromoutside; however, it is also conceivable for this expenditure of forceto be brought to bear by actuators, optionally triggered in an amplifiedway, that cooperate with the valve members.

By the provisions recited in the other claims, advantageous refinementsof and improvements to the valve defined by claim 1 are possible.

Suitably shaped valve members and valve seats make it possible to pressthe lifting rod through the valve chamber more easily. By the embodimentof a chamfer on the side of the valve member remote from the associatedvalve seat, which side extends relative to the axis of the lifting rod,and a corresponding chamfer of the same inclination on the side of theassociated valve seat remote from the valve member, it is attained thatthe valve member can be passed more easily through the valve seat.

Material comprising the valve seat or the valve member can be receivedduring the passing of the valve member through the valve seat inrecesses embodied in the lifting rod, valve member or the associatedvalve seat, thus making it easier to pass the valve member through thevalve seat. In valve operation, the sealing elements have resumed theiroriginal shape, so that the valve chamber is securely sealed off in thedesired way.

It is also possible, by means of a chemical treatment of the sealingsurfaces of the valve member and valve seat with a lubricant, tominimize a sliding friction that occurs while the valve member is beingpassed through the valve seat.

The valve according to the invention in particular enables preassemblyof the valve chamber of valves, of the type described in DE 197 53 575A1: The sealing rings, which form the valve seats, and the spacer sleevethat embodies the actual valve chamber can already be installed in thevalve housing before the lifting rod is installed.

Only the valve members are mounted on the lifting rod itself. The valvemembers are press-fitted, for example, onto the lifting rod as theyalways have, at the desired point, and are optionally additionallycalked for the sake of security with material comprising the liftingrod. The calking offers a simple, reliable way of securing the valvemembers to the lifting rod. The lifting rod thus mounted outside thevalve housing, with its valve members secured to it, can then beinserted through the valve chamber into the preassembled valve housing,because of the elasticity of the valve seat and the valve member.

The lifting rod of the valve of the invention can be produced forexample from a plastic as well. This lowers the cost for material on theone hand and on the other has the advantage that the valve members canbe welded directly into the lifting rod, which in turn means asubstantial simplification in assembling the valves.

The valve of the invention thus makes a modified, faster assemblypossible and thus results in improved quantity and reduced costs in theproduction of the valve.

DRAWING

Three exemplary embodiments of the invention are shown in the drawingand will be described in further detail in the ensuing description.

Shown are:

FIG. 1, a cross section through a valve of the invention in accordancewith the first exemplary embodiment;

FIG. 2, an enlarged detail of FIG. 1;

FIG. 3, a cross section through an alternative version, according to theinvention, of a valve in accordance with the second exemplaryembodiment;

FIG. 4, a variant according to the invention, in an enlarged detail ofFIG. 3; and

FIG. 5, a detail of FIG. 2, during the assembly of the valve.

DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The valve 10 according to the invention, shown in cross section in FIGS.1 and 2, has a valve housing 12, which has a valve chamber 14, leadinginto which are an inlet conduit 16, a first outlet conduit 18, and asecond outlet conduit 20. The valve chamber 14 is inserted into thevalve housing 12 and is formed by one valve seat 22—at the bottom inFIG. 1 or FIG. 2—facing the first outlet 18; one valve seat 24—at thetop in FIG. 1 or FIG. 2—facing toward the second outlet conduit 20; andone spacer sleeve 26, disposed between these two sealing elements, whichdefines the actual volume of the valve chamber 14. The valve chamber 14of the valve 10 can thus be replaced, and the valve 10 can thus beadapted more easily to special applications. The valve seats 22 and 24of the valve chamber 14 are of an elastically stretchable material inthis exemplary embodiment, such as NBR (nitrile butadiene rubber) andeach have a respective valve opening 60 and 62. The valve chamber 14 isfixed in the valve housing 12 by a further spacer sleeve 28. To thatend, the spacer sleeve 28 is braced on the one hand on the upper valveseat 24 of the valve chamber 14 and on the other on a support wall 30,which is secured to the valve housing 12. Located between the supportwall 30 and the spacer sleeve 28 is a seal 32, which is placed in thevalve housing 12. The outlet conduit 20, which discharges into thespacer sleeve 28, communicates with the valve chamber 14 via a valvemember 38 and the associated valve seat 24.

A lifting rod 341 which carries the valve member 38 and, on its endtoward the first outlet conduit 18, a second valve member 36—which inFIG. 1 or FIG. 2 is the lower valve member—leads through the valvechamber 14. The valve member 36 cooperates with the valve seat 22 of thevalve chamber 14 and controls the first outlet conduit 18. This outletconduit is for instance closed—as shown in FIG. 2—when a sealing face 94of the valve member 36 presses against a sealing face 96 of the valveseat 22. In the version described here of the valve 10 according to theinvention, the valve members 36 and 38 are made from plastic or fromsome other rigid material, such as brass. Using brass for the valvemembers 36 and 38 has the advantage, among others, of enhancedmechanical stability of the valve members. The inlet conduit 16discharges into the valve chamber 14 between the two valve seats 22 and24.

FIG. 5, in a detail of FIG. 2, shows the valve member 36 of the valve 10in an intermediate position during assembly. For assembling the valve10, the lifting rod 34, with the valve members 36 and 38 secured to itpreviously, is thrust through the valve chamber 14 that has beeninserted into the valve housing 12. To that end, the elastic material ofthe valve seats 22 and 24 is stretched and forced apart by the rigidvalve member 36. A gaplike expansion region 83 between the valve housing12 and the valve seats 22 and 24 is closed in this exemplary embodimentwhile the valve member 36 is being forced through the valve seats 22 and24. Through the thus-widened valve openings 62 and 60, it is possible tothrust the valve member 36. Once the valve member 36 has been forcedthrough the valve seats 22 and 24, these seats resume their initialshape, because of their elasticity. The valve members 36 and 38,together with the associated valve seats 22 and 24, respectively, canthen seal off the valve chamber 14 in the desired way during operationof the valve 10, because for example the sealing face 96 of the valveseat 22 comes to rest on the sealing face 94 of the valve member 36 andcloses the first outlet conduit 18.

In the version of the valve according to the invention, the valve member36 is calked against the lifting rod 34, in that material 54 comprisingthe lifting rod 34 is forced against the valve member 36. The valvemember 36—as can be seen from the enlarged detail in FIG. 2—has achamfer 56, on the side of its circumference remote from the valve seat22, that corresponds to a chamfer 58 on the side of the valve seat 22remote from the valve member 36 and to a chamfer 59 on the side of thevalve seat 24 from the valve member 36. The chamfers 56, 58 and 59 haveapproximately the same inclination and make it easier to pass thelifting rod 34, with the valve members 36 and 38 secured to it, throughthe valve chamber 14 upon assembly. Guided by the chamfers 56, 58 and59, the elastic material of the valve seats 22 and 24 is stretched andthus forced apart, so that the valve member 36 can be pressed throughthe widened valve openings 60 and 62. To minimize any sliding frictionthat occurs while the valve member 36 is being forced through the valveseats 22 and 24, the surface 84 of the valve member 36 and the surface86 of the valve seat 22 are provided with a lubricant.

In the exemplary embodiment shown in FIG. 1 and FIG. 2, the valveopening 62 of the valve seat 24 is dimensioned as large enough that thevalve member 36 can be passed through this opening without anyexpenditure of force. However, it is not always possible to realize sucha configuration, so that in other versions of the valve 10 according tothe invention, the valve member 36 is also pressed with an expenditureof force through the valve seat 24.

The upper end of the lifting rod 34 is extended out of the valve housing12 through the seal 32, which rests on the lifting rod 34, and throughthe support wall 30 and discharges into a coil housing 40.

An electromagnetic coil 42 with windings 43 on a coil holder 44 and amagnet core 46 are located in the coil housing 40. The end of thelifting rod 34 that is passed into the coil housing carries an armature48, which is solidly connected to the lifting rod 34 and is movableaxially together with it in an armature guide 50 in the interior of thecoil 42. Valve springs 52, which act counter to the magnet core 46 ofthe coil 42, are mounted on the armature 48. The armature 48 and thelifting rod 34 fixed in it are surrounded by the windings 43 of the coil42. In this exemplary embodiment of the valve of the invention, theelectromagnetic coil 42, in conjunction with an electric current flowingthrough the windings 43 of the coil 42 and in conjunction with thearmature secured to the lifting rod 34, forms an actuator 53, whichmoves the lifting rod 34 of the valve 10. Depending on the current flowthrough the coil 42, the armature 48 in the armature guide 50, and thusthe lifting rod 34 secured to the armature, together with the valvemembers 36 and 38, assume different switching positions in the valve.

The end toward the armature of the lifting rod 34 and the coil 42surrounding this end are protected from the outside by the coil housing40. The coil housing 40 is secured to the valve housing 12 via thesupport wall 30.

FIG. 3 shows an alternative version of the valve of the invention incross section.

The valve 110, which is essentially the same in function, again involvesa magnet valve with an inlet conduit 116, a first outlet conduit 118,and a second outlet conduit 120, which communicate via a valve chamber114 in the valve housing 112. In contrast to the possible embodiment ofthe valve 10 of the invention shown in FIGS. 1 and 2, in this examplethe walls 188 of the valve chamber 114, including the valve seats 122and 124, are produced integrally of a rigid material—in this caseplastic.

A lifting rod 134, which in this exemplary embodiment again comprisesplastic, has, outside the valve chamber 114 in the region of the outletconduit 120, a platelike widened portion 168, which carries an elasticsealing ring 170. The sealing ring 170 is clamped between the platelikewidened portion 168 of the lifting rod 134 and a spacer piece 172, whichis likewise secured to the lifting rod 134. The platelike widenedportion 168, the sealing ring 170 and the spacer piece 172 form thevalve member 138 of the second outlet conduit 120, in this versionaccording to the invention of the valve 110.

The end toward the first outlet conduit 118 of the lifting rod 134carries a sealing member 174, which can be made from an elasticmaterial, which in this exemplary embodiment is known as FKM(fluorocarbon rubber). However, it is also possible to use a rigidplastic material. The sealing member 174 is resiliently joined to thelifting rod 134 via a head piece 176. For that purpose, on one end—thelower end in FIG. 4—the sealing member 174 is solidly joined to the headpiece 176 of the lifting rod 134, but not to the lifting rod 134 itself.The sealing member 174 gripping the lifting rod is movable radially tothe lifting rod 134 and is secured in this direction by a collar 178extending around the lifting rod 134. The sealing member 174,encompassing collar 178, and head piece 176 form the valve member 136 inthis exemplary embodiment.

The valve member 136, on its side remote from the valve chamber 114,likewise has a chamfer 156 relative to the axis of the lifting rod 134;this chamfer corresponds to a chamfer 158 of the valve seat 122, on theside remote from the valve member 136, and to a chamfer 159, on the sideof the valve seat 124 remote from the valve chamber 114. The chamfers156, 158 and 159 have approximately the same inclination. The valve seat122 in this exemplary embodiment is formed by a narrowing of thediameter of the valve chamber 114, on the side of the valve chamber 114toward the first outlet conduit 118.

In the assembly of the valve 110, the lifting rod 134, with the valvemembers 136 and 138 mounted on it, is thrust through the rigid valveseats 122 and 124 of the valve chamber 114. The shape of the sealingmember 174 is designed such that it can be compressed resiliently untilit contacts the lifting rod 134 and has thus reduced its radial length.In the process, the sealing member 174—guided by the correspondingchamfers 156, 158 and 159—is pressed into the recess 182 between thehead piece 176 and the encompassing collar 178 of the lifting rod 134. Alubricant on the corresponding chamfers 156, 158 and 159 once againmakes it easier to force the valve member 136 through the valve seats122 and 124, which in this exemplary embodiment are rigid. After thevalve member 136 has been forced through, the sealing member 174 spreadsaway from the lifting rod 134 again and, together with the valve seat122, seals off the outlet-side opening 162 of the valve chamber 114. Inthis exemplary embodiment of the valve 110 according to the invention,the requisite elasticity of the sealing elements is accordinglydetermined essentially by the elastic formed of the valve 136.

A further variant of the valve 110 of the invention is shown as a detailin FIG. 4. This shows a part of the valve housing 112 with the valvechamber 114 and the valve seat 122. The valve seat 122, on its sideremote from the valve member 236, again has a chamfer 158, relative tothe axis of the lifting rod, that corresponds to a chamfer 255 on theside of the valve member 236 remote from the valve seat 122. In thisexemplary embodiment, the lifting rod 134 has a sealing member 74 and,on its end toward the sealing member 74, a head piece 76. The sealingmember 74 is secured on one end—the lower end in FIG. 4—to the liftingrod 134 and the head piece 76, in such a way that the sealing member 74can be compressed resiliently and conforms, guided by a collar 78extending on the lifting rod 134, to the lifting rod 134. The sealingmember 74, encompassing collar 78 and head piece 76 in this exemplaryembodiment form the valve member 236.

In the assembly of this variant of the valve 110, the lifting rod 134,again with the already pre-mounted valve members 236 and 138—the latternot visible in FIG. 4—is thrust through the valve seats 122 and 124 ofthe valve chamber 114. The shape and material of the sealing member 74are selected such that when the valve member 236 is forced through thevalve seats 122 and 124, which in this exemplary embodiment are rigid,the sealing member 74 is compressed elastically and additionally pressesresiliently against the lifting rod 134. In the process, guided by thecorresponding chamfers 256, 158 and 159, the sealing member 74 ispressed into the recess 82 between the head piece 76 and theencompassing collar 78 of the valve member 236. Once again, a lubricanton the corresponding chamfers 256, 158 and 159 makes it easier to forcethe valve member 236 through the rigid valve seats 122 and 124. Afterbeing forced through, the sealing member 174 resumes its original formand position in the valve member 236 and can be pulled with its sealingface 294 against the sealing face 296 of the valve seat 122. In thisexemplary embodiment of the valve 110 of the invention, the requisiteelasticity of the sealing elements is accordingly determined by both theshape and the material of the valve member 236.

The invention is not limited to the exemplary embodiments described ofan electromagnetic valve with two valve members.

It can equally advantageously be achieved in a valve which has only oneoutlet conduit and thus carries only one valve member on the liftingrod. The valve according to the invention is equally not limited to theuse of an electromagnetic actuator. The valve housing in turn requiresno special valve chamber. Instead, the valve chamber can be formed bythe valve housing itself.

The valve of the invention is not limited to the use of the elasticmaterials named in the exemplary embodiments. Among others, thefollowing are possible materials for the sealing elements:

nitrile butadiene rubber (NBR),

hydrogenated nitrile butadiene rubber (HNBR),

hydrogenated nitrile butadiene rubber, with the addition of PTFE toreduce friction (HNBR+PTFE),

fluorocarbon rubber (FKM), and

ethylene propylene diene rubber plus a lubricant (EPDM+lubricant).

What is claimed is:
 1. A valve (10, 110) having a valve chamber (14,114), having at least one inlet conduit (16, 116) and one outlet conduit(18, 118) branching off from the valve chamber, having a movable liftingrod (34, 134), one end of which opens into an actuator (53), and havingat least one valve member (36, 136, 236) secured to the lifting rod (34,134), and having at least one valve seat (22, 122) cooperating with thevalve member (36, 136, 236), characterized in that the valve seat (22,122) and/or valve member (36, 136, 236) is elastically deformable, andthat the elasticity of the valve seat (22, 122) and/or valve member (36,136, 236) is at least so great that the valve member (36, 136, 236) canbe thrust through the valve seat (22, 122) by what is in particular anexternal exertion of force and subsequently the valve seat (36, 136,236) and the valve member (22, 122) return to their outset state,wherein the valve has a magnetic actuator (53).
 2. The valve (10, 110)of claim 1, wherein the at least one valve seat (22, 122) and theassociated at least one valve member (36, 136, 236) have a chamfer (58,158 and 56, 156, 256) relative to the axis of the lifting rod (34, 134),which chamfers correspond to one another.
 3. The valve (10, 110) ofclaim 1, wherein the elasticity of the valve seat (22, 122) and/or valvemember (36, 136, 236) is produced by means of the elastic properties ofthe material used and/or by the specially designed shape of the valveseat (22, 122) and/or of the valve member (36, 136, 236).
 4. The valve(10, 110) of claim 3, wherein recesses (82, 182) are located in thevalve seat (22, 122) and/or in the valve member (36, 136, 236), whichrecesses are capable of receiving elastic material comprising the valveseat (22, 122) and/or the valve member (36, 136, 236) while the valvemember (36, 136, 236) is being led through the valve seat (22, 122). 5.The valve (10, 110) of claim 1, wherein the at least one valve member(36, 136, 236) of the valve (10, 110) is calked at the lifting rod (34,134).
 6. The valve (10, 110) of claim 1, wherein the lifting rod (34,134) is made from plastic.
 7. The valve (10, 110) of claim 6, whereinthe valve members (36, 136 and 38, 138) are welded directly into thelifting rod (34, 134).
 8. The valve (10, 110) of claim 1, wherein thevalve chamber (14, 114) is hollowed out integrally.
 9. The valve (10,110) of claim 1, wherein he valve (10, 110) is part of thewater-associated control of the cycle of a heating or cooling system.10. The valve (10, 110) of claim 1, wherein the at least one valve seat(22, 122) and the associated at least one valve member (36, 136, 236)have a chamfer (58, 158 and 56, 156, 256) relative to the is of thelifting rod (34, 134), which chamfers correspond to one another.
 11. Thevalve (10, 110) of claim 1, wherein the valve member (36, 136, 236) iselastic, while the valve seat (22, 122) is substantially rigid.
 12. Avalve (10, 110) having a valve chamber (14, 114), having at least oneinlet conduit (16, 116) end one outlet conduit (18, 118) branching offfrom the valve chamber, having a movable lifting rod (34, 134), one endof which ovens into an actuator (53), and having at least one valvemember (36, 136, 236) secured to the lifting rod (34, 134), and havingat least one valve seat (22, 122) cooperating with the valve member (36,136, 236), characterized in that the valve seat (22, 122) and/or valvemember (36, 136, 236) is elastically deformable, and that the elasticityof the valve seat (22, 122) and/or valve member (36, 136, 236) is atleast so great that the valve member (36, 136, 236) can be thrustthrough the valve seat (22, 122) by what is in particular an externalexertion of force and subsequently the valve seat (36, 136, 236) and thevalve member (22, 122) return to their outset state, wherein thesurfaces (86, 186 and 84, 184) of the valve seat (22, 122) and/or of thevalve member (36, 136, 236) are treated with a lubricant, which reducesa sliding friction that occurs while the valve member (36, 136, 236) isbeing led through the valve seat (22, 122).
 13. A valve (10, 110) havinga valve chamber (14, 114), having at least one inlet conduit (16, 116)and one outlet conduit (18, 118) branching off from the valve chamber,having a movable lifting rod (34, 134), one end of which opens into anactuator (53), and having at least one valve member (36, 136, 236)secured to the lifting rod (34, 134), and having at least one valve seat(22, 122) cooperating with the valve member (36, 136, 236),characterized in that the valve seat (22, 122) and/or valve member (36,136, 236) is elastically deformable, and that the elasticity of thevalve seat (22, 122) and/or valve member (36, 136, 236) is at least sogreat that the valve member (36, 136, 236) can be thrust through thevalve seat (22, 122) by what is in particular an external exertion offorce and subsequently the valve seat (36, 136, 236) and the valvemember (22, 122) return to their outset state, wherein a second valvemember (38, 128) is mounted on the lifting rod (34, 134), on the side ofthe at least one valve member (36, 136, 236) opposite the at least, onevalve seat (22, 122).
 14. The valve (10, 110) of claim 13, wherein thesecond valve member (38, 138) and the valve seat (24, 124) belonging tothis second valve member (38, 138) are likewise elastically deformablein such a way that both valve members (36, 136 and 38, 138) can bethrust through the valve seats (22, 122 and 24, 124) with in particularexternal expenditure of force.
 15. A valve (10, 110) having a valvechamber (14, 114), having at least one inlet conduit (16, 116) and oneoutlet conduit (18, 118) branching off from the valve chamber, having amovable lifting rod (34, 134), one end of which opens into an actuator(53), and having at least one valve member (36, 136, 236) secured to thelifting rod (34, 134), and having at least one valve seat (22, 122)cooperating with the valve member (36, 136, 236), characterized in thatthe valve seat (22, 122) and/or valve member (36, 136, 236) iselastically deformable, and that the elasticity of the valve seat (22,122) and/or valve member (36, 136, 236) is at least so great that thevalve member (36, 136, 236) can be thrust through the valve seat (22,122) by what is in particular an external exertion of force andsubsequently the valve seat (36, 136, 236) and the valve member (22,122) return to their outset state, wherein a second outlet conduit (20,120) with an associated valve seat (24, 124) and valve member (38, 138)branches off from the valve chamber (14, 114) of the valve (10, 110).16. An electromagnetically-actuated valve (10, 110) for water-associatedcontrol of the cycle of a heating or cooling system, having a valvechamber (14, 114), having at least one inlet conduit (16, 116) and oneoutlet conduit (18, 118) branching off from the valve chamber, having amovable lifting rod (34, 134), one end of which opens into an actuator(53), and having at least one valve member (36, 136, 236) secured to thelifting rod (34, 134), and having at least one valve seat (22, 122)cooperating with the valve member (36, 136, 236), characterized in thatthe valve seat (22, 122) and/or valve member (36, 136, 236) iselastically deformable, and that the elasticity of the valve seat (22,122) and/or valve member (36, 136, 236) is at least so great that thevalve member (38, 136, 236) can be thrust through the valve seat (22,122) by what is in particular an external exertion of force endsubsequently the valve seat (36, 136, 236) and the valve member (22,122) return to their outset state.
 17. An electromagnetically-actuatedvalve (10, 110) for water-associated control of the cycle of a heatingor cooling system, having a valve chamber (14, 114), having at least oneinlet conduit (16, 116) and one outlet conduit (18, 118) branching offfrom the valve chamber, having a movable lifting rod (34, 134), one endof which opens into an actuator (53), and having at least one valvemember (36, 136, 236) secured to the lifting rod (34, 134), end havingat least one valve seat (22, 122) cooperating with the valve member (38,136, 236), characterized in that the valve seat (22, 122) and/or valvemember (36, 136, 236) is elastically deformable, and that the elasticityof the valve seat (22, 122) end/or valve member (36, 136, 236) is atleast so great that the valve member (36, 136, 236) can be thrustthrough the valve seat (22, 122) by what is in particular an externalexertion of force and subsequently the valve seat (36, 136, 236) and thevalve member (22, 122) return to their outset state, the at least onevalve seat (22, 122) and the associated at least one valve member (36,136, 236) have a chamfer (58, 158 and 56, 156, 256) relative to the axisof the lifting rod (34, 134), which chamfers correspond to one another.